BIOL 005A Lecture Notes - Lecture 2: Chemical Polarity, Heat Capacity, Surface Tension
Document Summary
Water is therefore a polar molecule, with a partial negative charge near the oxygen and partial positive charges near the hydrogens. In liquid water, each water molecule can form four hydrogen bonds with other water molecules. Cohesion: hydrogen bonds hold water molecules together. allows water to be transported in plants against the force of gravity. Water can travel up roots contributes to surface tension , which allows animals such as water striders to walk on the surface of a pond. Adhesion: water also interacts with other molecules in a tree it will form hydrogen bonds with the cell walls, which also helps it travel against the force of gravity. Can interact w nacl and nh3 because those are polar. Water is a polar solvent , (interact with other polar molecules) hydrophilic . hydrocarbon chains (regions involving c and h) are nonpolar and hydrophobic . This is why water and oil don"t mix. Water has a high specific heat capacity.
